Videos
Video: Mystery of sheep walking in circles continuously for 12 days
A flock of sheep has been moving in mysterious circles for 12 days straight in northern China.
Pen
Browse ScienceInfo articles and explainers related to Pen.
Topic archive
Articles about Pen
81 published items.
Discover science
Why are pencils called pencils even though they don't contain lead?
We call it a brush pen because its nib is made of feathers; we call it a fountain pen because its nib is made of metal. So why is a pencil called a pencil when it is not…
Science invention
Indian student creates world's smallest vacuum cleaner
An Indian student has set a Guinness World Record by turning a ballpoint pen into the world's smallest vacuum cleaner.
Oceanography
The 1.2m giant clam thought to be extinct 'reappears' off the coast of Croatia
A parasite almost wiped out the giant Pinna nobilis mussel in 2016. However, recently, Croatia discovered that this mussel is growing again and is making efforts to pres…
Archeology
Discovered 1,000-year-old ink pen made of bone in Ireland
The pen is composed of a bone tube and a metal nib that acts like an ink pen, suitable for drawing fine lines.
Space science
The space elevator will connect Earth with the Moon
This Spaceline elevator can be fabricated from existing materials. Instead of launching rockets out of orbit, astronauts will only need Spaceline to reach the end of the…
Discover science
The truth behind NASA spending money on pen research in the universe
It turns out that the story you have heard for so long is just a trick. The real story is hundreds of times more interesting!
Archeology
Discovered a 2,000-year-old iron pen engraved in English
The ancient pen carved passage was restored by experts to become more readable, revealing witty content.
Discover science
The title of the world's steepest road changed owners
A new Wales path is recognized by the Guinness Book of World Records as the world's steepest, breaking the previous record set in New Zealand.
New technology
Study the search for light - the tiny 'lightsaber' that humans can use in the medical field
This promises to open a new era in the health industry.
Discover science
How much paper can one produce from a tree?
Paper is made from trees, but how many sheets does a tree make? Try to put a pen on it.
Discover science
Why use a pencil in multiple-choice tests?
According to TodayIFoundOut, today's testing machines use image sensors and complex image processing algorithms.
Discover science
4 best weapons in China: The last one is the pure samurai of Japanese samurai
These new names of strange weapons are the first to make the poster surprised by their power.
Discover science
Feeling 'crazy' because of the click of a pen? It is a sign that you have a mysterious disease
It also makes you angry when you hear a breath or chewing gum.
Discover science
Use of small holes in ballpoint caps
The small hole at the end of the ballpoint pen is designed to be safe for the user, but its true effect is still controversial.